Its time to explore the most southern part of the Sundom: The Jewel. It's a jungle type area with a lot of foliage and dangerous machines. Stalkers, Sawtooths, Ravagers, Longlegs, and more. The Jewel is home to Cauldron XI, which is the most unique Cauldron in the game. It's also home to the Carja prison, Sunstone Rock. Finally, the Jewel is also the location of what might be your final interaction with Nil.
